Thyroid - Blog Posts

hey chat

shout out to thyroid issues for fucking me over my tummy hurts and my heads killig me. am alost aways feelings sick

Finally logged back onto Tumblr, it’s a licorice candy and thyroid disease kind of night

Thyroid function panel (data stolen from my diagnostics ref) with the added bonus of some structures I’ll probably regret not being able to recognize without a guide

tsh but it's not the secret history it's actually thyroid-stimulating hormone

Joke’s on the ableist people though, in my case. I want to die, have for years. I hate being a burden so very much, especially because my disabilities aren’t obvious and look like laziness even to me. I would have killed myself long ago if I didn’t have family who would grieve.

I hate how often some (typically abled) people will go “well, if you can’t [get a specific support], then what?” when it comes to disabilities. As if it’s a “gotcha” moment. And then act like you’re exaggerating when you answer that question honestly.

Disabled people often die from a lack of support. A lot of disability aids are not a luxury, but a basic need in order to live.

“Well what happens if—” people die. People hurt themselves. People hurt others. Disabled people don’t magically become abled if our needs aren’t met.

If a bedbound quadriplegic is caught in a housefire, and there’s nobody there to save them, they’ll probably die. They won’t magically become able-bodied out of sheer will.

If a nonspeaking/nonverbal autistic is denied access to alternative methods of communication, they’ll suffer in silence. They won’t spontaneously become capable of speech.

Disabled people are disabled all the time. Our disabilities don’t go away just because they’re inconvenient, or if we’re in danger.

Thyroid function tests

Standard Tests

TSH levels

Free T4 (fT4) levels

Measurements of total T4 + T3 used to be common however detects both bound and free T3 + T4

Elevated total T4 may occur in healthy individuals if there is an increase in binding protein concentrations

Reliable tests now exist for free T4 + T3

T3 = 3.9-6.7 pmol/L

T4 = 12-22 pmol/L

Thyroid-stimulating hormone

Produced by the pituitary gland, not the thyroid, however:

TSH levels are controlled by negative feedback – can be indication of thyroid function (changes in T3+T4 will result in changes in TSH to try compesate)

TSH levels greatly elevated in hypothyroidism – >10 fold increase over reference values

More sensitive marker than decreased fT4 - increased TSH occurs before fT4 decreases

TSH levels greatly supressed in hyperthyroidism

Low concentrations can also occur in non-thyroidal illness

TSH measurement is the first-line test of thyroid function.

Free T4 + T3 Measurements

Desirable as free hormone is clinically relevant

Total levels can change under conditions that alter thyroxine-binding globulin (TBG) levels e.g. pregnancy

Large changes in TBG may still affect fT4 + fT3 levels

fT3 levels often normal in hypothyroidism

fT3 levels usually raised more than fT4 levels in hyperthyroidism

Unless complicated by an illness effecting conversion of T4 to T3

Therefore: – fT4 levels are a better indication of hypothyroidism

fT3 levels are a better indication of hyperthyroidism